This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: https://info.ahrq.gov. Let us know the nature of the problem, the Web address of what you want, and your contact information.

Figure 6. Population Potential Maps: Health Service Area IV, North Carolina

Population potential measures the nearness or accessibility of people to a certain point or place. In a region, the map could use isolines, as in the example on the right, to measure the influence on a particular point of all other points.